/**
 * 0028
 *  
 * @Author : roryrywang
 * @DateTime : 2024/8/13 23:13
 */

#include <iostream>
#include <vector>

using namespace std;

class Solution {
public:
    // KMP
    int strStr(string haystack, string needle) {
        return haystack.find(needle);
    }
};

int main() {

    return 0;
}